Railway brake beam structure



July 24, 1951 H. w. EKHOLM 2,

RAILWAY BRAKE BEAM STRUCTURE Filed Dec. 26, 1947 2 Sheets-Sheet 1' INVENTORI HERBERT W EKHOLM July 24, 1951 H. w. EKHOLM 6 RAILWAY BRAKE BEAM STRUCTURE Filed Dec. 26, 1947 2 Sheets-Sheet 2 INVENTQR': HERBERT W. EKHOLM Patented July 24,1951

Herbert W. Eklrolm; Chicago, Ill., assignor to Chic'ago RailwayEquipment Company, Chicago 111., aco'rporation of Illinois Application December 26, 1947, Serial No. 793,814

The invention relates to railway brake beams is to assemble the largement on each end of the tension member and without weakeningthe tension and comj, pression members as by like.

.' Another object is to mount the brake head so the brake head may pivot relative to the tension threading, drilling or the rod when side pressure is applied to the head at -.',any angle.

,i ,,j Another object is to facilitate assembly and lid sassemm of the beam by providing an end structure including a removable element which ,normally holds the tension member to the com-- pression member.

Another object is to form the seat, for receiving a supporting hanger, and the center lug, for

, receiving a brake shoe, in the end structure removable element which may be made of hardened steel wear plate.

and thereby constitute a removable Another object is to assemble a reversible brake head to either end of a, beam of the kind I described.

' These and other detail I below are attained by the structure illustrated in I the accompanyingdrawings, in which:

objects as will appear Figurei is a plan view of a truss type brake beam embodying the invention.

Figure 2 .is a horizontal section through the f left-hand end of the beam approximately on line 2 2 of Figure 3. I Q1. F gure 3 is an end view of the beam.

[Figure 4 is a transverse vertical section through f the right-hand ends of thecompression and ten- I sion members and taken approximately on line 4 -4 of Figure 1. I

' Figure 5 is a detail showing a modification of the end structure removable element.

Figures 6 and '7 are views similar to Figures 3 fand 4, respectively, and show another form of the invention.

The beam shown in Figures 1-4 includes a compression member I of channel-shaped cross section, a round rod tension member 2 and a strut 3 intermediate the ends of the beam. The end fportions of the compression and tension mem- -'bers converge, each end portion of the tension member being received between the compression 8 Claims. (Cl. 188-22313) I z member flanges la and extending beyond the ends of the compression member. The end portions of the tension member are upset or otherwise enlarged as indicated at 4. v

A brake head 5 is mounted on each end of the beam and has forwardly projecting lugs 6 receiving a, lug S of a brake shoes S. A passage] in brake head '5 receives the end portions of the tension and compression members. The back wall 8of passage I engages the outer face of the compression member web Ib and the top and bottom walls '9 of the passage engage the outer faces of compression member flanges la. The brake head I seats the end of the compression member at l3 and seats the enlargement 4 on tension member An arcuate web I!) extends vertically across passage I from its top wall to its bottom wall and the rear face of web I!) engages the for- 'ward edges of flanges I a. The forward concaved faceof web II] receives tension member 2; Passage I opens forwardly of the beam to facilitate assembly of tension member 2 to head 5.

A removable block ll, preferably of hardened steel, is received in the passage opening and between top and bottom walls 9. The rear face I I a of block II is concaved and opposes the forward member.

concaved face of web I0 and cooperates there- :with-to form asleeve fitting around the tension through passage top and bottom walls '9 and through block I I and secure the block to the head. I The forward face of block II is recessed at I3a the truck frame.

to receive a hanger I3b to support the beam from I Forwardly extending fingers I lb on block I I are seated against lugs 6 and are disposed to engage the shoe lug to support the shoe and resist its vertical movement. By making block II of wear resisting material, and by providing for its removal if worn, the life of the 'member is moved perpendicularly of its length through the associated passage opening into engagement with web Ill and the block II is secured in the passage by rivets I2 to close the passage opening and to cooperate with enlargements 4 on the tension member to'maintain assembly of Vertically disposed rivets I2 extendthe beam. Enlargements 4 may be any desired shape -but the portion seated on the brake head f preferably is rounded as indicated sothe brake fifl head may pivot'relative to the tension red when said web, and an enlargement on said tension member end portion to prevent withdrawal of said tension member from said structure.

3. In a railway truss type brake beam, a compression member and a tension member with their end portions converging, a brake head at the end of the beam having a passage to receive the as- .1sociated endportions,; an *QlBIglQltll] .received in said passageiand confining said tension member ber 32 having their end portions converging and received in a, passage 33 in an end member. 34.

A vertically disposed arcuate web 35 extendsvertically across the passage and confines the end i portion of the compression member in the rear portion of the passage. The forward concaved end portion, and an integral enlargement on said tension member end portion opposing said head and preventing withdrawal of said tension member 'endportion from said passage and thereby maintaining assembly of said brake head to said members,'said element being of relatively hard metal and including a recess for receiving a beam face of web 35 receives tension member 32.v .A

brake head 36 is attached to the forward faces of lugs 38 on end member 34 by rivets 39. A con caved rear face 36a of brake head 36 opposes the -concav-ed forward face of web 35 and secures tension: member 32 therebetween. The end of tensien membertz is enlarged at 31 to maintainassembly of the beam members.

The brake head is of the duplex type and may I portion of :tension member 32 in the concave face of web 35. Brake head 35 then is riveted to end member 3 and secures tension member 32 therebetween. V

The details of construction may be varied sub stantially without departing from the spirit of the invention, and the exclusive use of those modifications' coming within the scope of the claims is :contemplated.

' "What is claimed is: v

; 1. In a railway truss type brake beam, a compression member and a tension member with their end portions converging, there being an integral enlargementon each tension member end portion,'structure at each end of the beam having a passage receiving the associated end portions -and having an opening facing transversely of the I beam, said structure opposing the end of said compression member to restrain movement of said structure inwardly of the beam and opposing .said enlargement to restrain movement of said structure outwardly of the beam, said structure including a separate element fitting in said opening and against said tension member end portion and restraining relative movement of said members transversely of the beam and forming a seatfor a brake shoe and maintaining assembly of said structure and said members.

2-. In a railway truss type brake beam, a compression member and a tension member with their end portions converging, structure at each end of I the beam having a passage receiving the associated'end portions, said structure including an integral arcuate web extending into said passage andspaced from the front and back of the passage,

said compression member end portion being con-..

I fined insaid passage at one side of said web and said tension member end portion being received r in said passage at the other side of saidweb, a removable element opposing said web, said tension ,r member being confined between said element and hanger and also. including a bearing for supporting a brake shoe lug.

4. End structure for a railway brake beam including lugs for mounting a brake shoe and having a passage adapted to receive the converging end portions of a tension, and a compression member, an integral web extending into said passage and. adapted to confine the compression member end portion and to receive the' tension member end portion-and a-detachable element restricting said passage and opposing said web, said tension member being confinedbetween said element andsaid web.

5. End structurefor a railwaybrake beamincluding lugsfor mountinga brake shoe ,andhaving a passage extending transversely through the structure and having an opening facing longitudinally of the beam and adapted to receive the converging end portions of a tension andv a compression member, an integral arcuate web extending across said passage opening and adapted to confine the compression member end portion at one sideand to receive .thetension member end portion at the other side, and .a detachable element closing said passage opening and opposing said web, said tension member being confined between said element and said web.

6. A brake head for a railway brake beam comprising elements for mounting albrake shoe, a. passage extending transversely through the brake head and having an opening facing longitudinally of the beam and adapted to receive the converging end portions of a tension and a compression member, and a separate blockrestricting said passage opening and adapted to oppose the tension .member end portion and maintain assembly of the-brake head and the members, said block including a seat for a brake beam hanger and a wear surface for supporting a brake shoe lug,

7. Ina railway truss typebrakebeam, a compression member and a tension member with their end portionsconverging, an integral enlargement on each tension member end. portion, structure ,ateach end of the beam supporting said enlargement and provided with a passage having an opening forwardly of the beam, the structure having. arear part mountedon the compression member and including an integralarcuate web. extending into the passage, saidcompression member end portion being confined. in said passage at one side of said web and said tensionmem-ber end portion being received in saidpassagethrough saidopening .to assemble the beam and being positioned at the other side ,ofsaid web, and said structure including aseparable element across vsaidopening opposing'said web, said tension-member lbeing confined between. said element and s idweb. H

5 8. A brake beam as described in claim '7 in which the separable element comprises a brake Number head secured to the structure rear part. 606 298 HERBERT WLEKHOLM. 1 659:319 5 1,634,995 REFERENCES CITED 2,182,210

The following references are of record in the file of this patent: I

UNITED STATES PATENTS Name a Date Pungs June 28, 1898 Posson Oct. 9, 1900 Huntoon July 5, 1927 Osner et a1. Dec. 5, 1939 

